Cheap Solar Cell Panel Small Solar Panel

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Loading Port:
China main port
Payment Terms:
TT or LC
Min Order Qty:
50000 pc
Supply Capability:
15000 pc/month

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Product Description:




1. monocrystalline silicon solar panel

2. high efficiency

3. 25 year module output warranty


1) 5 years for material & workmanship;

2) 12 years for 90% power output;

3) 25 years for 80% power output.


Packaging & Delivery

MOQ: 50pcs

Delivery Time: 10-20 days after order confirmation

Package: Wooden carton or pallet packing

Max Power (W)25w
Optimum Power Voltage18.40V
Optimum Operating Current1.36A
Open Circuit Voltage22.53V
Short Circuit Current1.45A
Cell quantity36 pcs



Solar cells and their teachnoleadges

The history of solar cell development is briefly outlined, and the properties of the sun and solar radiation are reviewed. Properties of semiconductor materials that are important in the design and operation of solar cells are reviewed. The physical mechanisms involved in the generation and recombination of excess carriers are discussed and the basic equations of device physics are given. Both the dark and illuminated properties of p-n junctions are analyzed. Energy conversion efficiency limits are discussed for the photovoltaic process as well as the effects of various nonidealities on efficiency. Techniques for measuring the efficiency of photovoltaic devices are also described. The standard technology for making silicon solar cells is reviewed, and improved silicon cell technology is discussed. Considerations relevant to the detailed design of silicon cells are discussed. Several alternative device concepts are outlined and the structure and properties of solar cells made on some of the more developed alternatives to single-crystal silicon are discussed. Concentrating systems and photovoltaic systems components and applications are described. The design of stand-alone, residential, and centralized photovoltaic power systems are discussed. 

Solar cells and their applications

Multiple solar cells in an integrated group, all oriented in one plane, constitute a solar photovoltaic panel or solar photovoltaic module. Photovoltaic modules often have a sheet of glass on the sun-facing side, allowing light to pass while protecting the semiconductor wafers. Solar cells are usually connected in series and parallel circuits or series in modules, creating an additive voltage. Connecting cells in parallel yields a higher current; however, problems such as shadow effects can shut down the weaker (less illuminated) parallel string (a number of series connected cells) causing substantial power loss and possible damage because of the reverse bias applied to the shadowed cells by their illuminated partners. Strings of series cells are usually handled independently and not connected in parallel, though as of 2014)individual power boxes are often supplied for each module, and are connected in parallel. Although modules can be interconnected to create an array with the desired peak DC voltage and loading current capacity, using independent MPPTs (maximum power point trackers) is preferable. Otherwise, shunt diodes can reduce shadowing power loss in arrays with series/parallel connected cells.


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Q:What should I know about the Crystalline silicon photovoltaic cells?
Crystalline silicon photovoltaic cells is the most early development of a solar cell. 1.leV, the band gap width of silicon, is an indirect migration type semiconductor, which is not the most suitable material for making solar cells.
Q:Is there any easy way to make a solar cell? I want to make a DIY solar cell with my child at home.
Get all the materials required in making a solar cell, and you are half way done!
Q:What is the best sales solution for solar power cells?
Because solar power cells are usually purchased by companies, big corporations and governments, the best way to sell solar power cells is to do promotion targeting certain industries rather than just putting commercials on TV.
Q:What is a good introduction of solar cell?
A small and simple test on the solar cell can be good to start with.
Q:Is the polymer solar cell the cheapest type among all the different kinds of solar cells?
Yes, they are cheaper because of lower manufacturing costs.
Q:Are bulk solar cells better than the normal solar cells?
It's hard to just simply say the bulk solar cells are better than normal solar cells. If the normal solar cells are better designed, it might be better than bulk solar cells.
Q:How to get high voltage and high current output of solar cells?
Here is the way I tried by myself: Using 0.5 880 volt 5 ampere output of the battery board, in series 440 as the first group, and then get a second group, and then put the two groups in parallel, you can get what you want.
Q:Can I buy solar cells easily online?
Yes, you can.
Q:How to make solar cells in a scientific way?
After you collect all the stuff you need, you should follow steps like this: 1.Cut the copper sheeting 2. After cleaning the copper, you can start to burn it. 3. Place the copper in a jar after it is washed carefully. 4.Before you put salt into it, you should also connect the alligator clips. 5. Put it under the sun and you can get your solar cells working.
Q:How many solar cells are there in a solar panel?
It's hard to tell because it depends on the voltage.
Our company is a High-tech enterprise, who is professional on manufacturing on solar photovoltaic products. We mainly produce the solar module and system. Our annual production capacity of solar module is 50MW.Meanwhile,we also undertake the design, installation and serviceonbothon-grid & off-grid system for home and power plant.

1. Manufacturer Overview

Location Zhejiang,China (Mainland)
Year Established 2006
Annual Output Value Above US$100 Million
Main Markets North America 2.90%
South America 25.60%
Eastern Europe 4.83%
Southeast Asia 9.18%
Africa 1.16%
Mid East 2.90%
Western Europe 19.81%
Central America 2.41%
Northern Europe 9.95%
Southern Europe 8.21%
South Asia 0.97%
Domestic Market 12.08%
Company Certifications ISO 9001:2008

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Rotterdam,Hamburg
Export Percentage 81% - 90%
No.of Employees in Trade Department 6-10 People
Language Spoken: English, Chinese, Japanese, German, French
b)Factory Information  
Factory Size: 3,000-5,000 square meters
No. of Production Lines 5
Contract Manufacturing OEM Service Offered Design Service Offered Buyer Label Offered
Product Price Range Low and/or Average